Counter pressure filling apparatus



Se t. 12, 1933. J. KRIEGLMEYER COUNTER PRESSURE FILLING APPARATUS Filed Jan. 4, 1933 Patented Sept. 12, 1933 1,926,290 UNTER rnsssunn FIL ING 'nrriinariis Josef Krieglmeyer, Oradea, Roumania Applicatien .Sanuary 4, 193$,Serial No. and in Germany June 9, 1932 11 Qlaims. (G1. 226 -4315 In the known counter-pressure, pressure equalizing filling apparatus having filling members in the form-of valves, cock-s, sleeves or plungers and two pressure equalizing conduits, the return liquid, that isthe small quantity of liquid left after each filling in the return pressure equalizing conduit is driven upwards into the main liquid vessel when the next bottle or other container is filledyby'the air displaced from the bottle. To make this possible the return pressure equalizing conduit must not have too small a cross section, say not less than 12 sq. mms.

In order to prevent escape-of gas from the liquid vessel through the open return pressure conduit in the event of breakage of the bottle during filling, this conduit has been provided with a check valve which cuts off downward flow through this conduit. But these valves often fail in practice; the gas or air escapes if a bottle breaks, and owing to the resulting drop in pressure in'the liquid vessel undesirable and harmful foaming of the liquid takes place.

of liquid referred to above in'the return pressure pipe, it has been proposed to discharge this pipe not upwardly into the vessel, but downwardly, either positively or not, for example into the bottle, into the open air or into a vessel which can be under'the same pressure as the main liquid vessel. If now with such downward 'discharge'the return conduit is of the same dimensions as with upward discharge, the light foam unavoidably formed during filling will be iorced up through this conduit aindthrough the heavy beer or the like into the main liquid vessel and may infect the contents thereof.

With positive downward discharge of the return conduit it is aiurtherdisadvantage if the air or gas pressure drives the small quantity for example of beer in the conduit downwards too rapidly as if it is discharged into a bottle foaming results and if into the open airconsider .factors which are nevertheless very decisive in the return conduit.

, and not very cold beers at the highest rate of f "the apparatus and headless filling always obtained. The fillingof bottles with strongly roaming liquids such as beer is affected by very small 70 their eiiect on'the final result. The most satisfactory result, namely headless filling, is only obtained by suitable combination of various elements.

A counter-pressure, --pressure equalizing filling 15 apparatus having two pressure equalizing conv duits, the return conduit of each filling being In order to avoid infection of the beer or the like in the liquid vessel by the small quantity filled with liquid up to thelevel in the main liquid vessel, and in which the said return conduit is always emptied downwardly butnever so ,7

into the empty bottle to be filled, when the said conduit is throttled .in accordance with the in vention, satisfactorily fulfills all thez'conditions which can be imposed on afilling apparatus both biologically and r gards headless filling.

The invention is diagrammatically illustrated in the accompanying drawing.

Figure 1 is avertical section of the filling apparatus with a bottle in position, i

Figures 2, 3 and 4 shows three alternative modes oiproviding the reduced cross section of The throstlingof the return pressure equalizing conduit is advantageouslyeffected at a point above-the liquid levelin theinain vessel; the reduction in cross section acts in "both directions so that lie bottle breaks, drop in pressure in the vessel is hindered.

Thercduction in section can be permanent or in an exchangeable part; or it can beregula-tably constructed and it may exist during. the whole ,of the filling cycle or only during part thereof.

For example an arrangement in which the reduction incross section is formed at the upper end of the return conduit by means. of a preferably exchangeable blind nut, capor, the like with a small aperture, has been found very suitable in practice;

Tests show that the reduction in section of the a,

r not in line Withithe conduit 3.

return conduit is of value onlyfin counter-pressure, pressure equalizing apparatus if two pressure equalizing conduits are provided and if the return conduit is empty before the next bottle to be filled is placed in position.

Figure 1 shows the apparatus in the position in which the pressure equalizing conduit and the liquid conduit are closed, while the return pressure equalizing conduit is open. The main liquid vessel is designated 1, the pressure equalizing conduit 2, the liquidconduit 4, the return pres sure equalizing conduit 3 and the filling cock 5, On the upper end of the return conduit 3, in the main vessel 1 under pressure, is screwed a blind nut 6, having an aperture 7 which is small compared with the cross section of the conduit 3.

The filled bottle 8 is connected during the down ward emptying of the conduit 3 with an auxiliary vessel 9 as described in my co-pending application Serial No. 603,057.

Figure 2' shows a filling cock 5 in 'cross section through the return conduit, provided with a returnconduit 3 of reduced cross section over part In Figure 3, which shows a filling cock 5 in cross section through the return conduit, the reduction in cross section is produced in a certain position-of the cock plugby the passages 10,11 therein and/or the passage 12,.which comes into action when the direct through passage 11 is In addition the conduit 3 is also provided with. a regulatable reduction in section formed by the throttle valve Figure 4 shows a part 14 with reduced cross section interposed at a suitable point in the conduit 3 and exchangeable by the aid of unions 15, 16. v i The operation of the apparatus will be apparent from the drawing.

' Itonly remains to be stated that the throttling he r turn-conduit enables a liquid conduit 4 of large cross sectionto be employed.

What I claim is:

1. In counter pressure apparatus for filling bottles and the like having two pressure equalizing conduits and means for downwardly discharging the return pressure equalizing conduit before the next bottle or the like to be filled is placed in position, the provision of meansfor reducing the cross section of said return conduit to an amount serving to preventthe passage of foam from said conduit into the main liquid vessel, and to hinder the drop in pressure in the main vessel in the event of breakage of a bottle during filling.

, 2. In counter pressure apparatus for filling bottles and the like having two pressure equalizing conduits and means for downwardly discharging the return pressure equalizing conduit before the next bottle or the like to be filled is placed in position, the provision of means reducing the cross section of said return conduit to below 12 sq. mms.

3. In counter pressure apparatus for filling bottles and the like having two pressure equalizing conduits and means for downwardly discharging the return pressure equalizing conduit before the next bottle or the like to be filled is placed in position, the provision of means reducing the cross section of said return conduit to below 8 sq. mms.

4. In counter pressure apparatus for filling bottles and the like having two pressure equalizing conduits and means for downwardly discharging the return pressure equalizing conduit before the next bottle or the like to be filled is placed in position, the provision'of means throttling said return conduit located in the main liquid vessel.

5.v In counter pressure apparatus for filling bottlesand the like having two pressure equalizing conduits and means for downwardly discharging the return pressure equalizing conduit before the next bottle or the like to be filled is placed in position, a member having a small bore aperture relative to the cross section of said return conduit mounted upon the upper end of'said conduit.

6. In counter pressure apparatus for filling bottles and the like having two pressure equalizing conduits and means for downwardly discharging the return pressure equalizing conduit before the 'next bottle or the like to be filled is placed in position, the provision of Y exchangeable means throttling said return conduit.

'7. In counter pressure apparatus for filling bottles and the like having two pressure equalizing conduits and means for downwardly discharging the return pressure equalizing conduit before the next bottle or the like to be filled is placed in position, the provision of variable means throttling said return conduit. q

8. Counter pressure apparatus for filling bottles and the like having two pressure equalizing conduits and means for downwardly discharging the.

return pressure equalizing conduit before the next bottle is placed in position, said return conduit 7 comprising a portion of its length of less area of cross section than '12 sq. mms.

.9. Counterpressure apparatus for filling bottles and the like having two pressure equalizing conduits and means for downwardly discharging the i return pressure equalizing conduit before the next bottle is placed in position, said return conduit comprising a portion of its length of less area of cross section than 8'sq. mms.

10. In counter pressure apparatus for filling bottles and the like having 'two pressure equalizing conduits, means for downwardly discharging the return pressure equalizing conduit before the next bottle is placed in position and a filling cook, the provision in said cock of means forthrottling said return conduit.

11. Counter pressure apparatus for filling bottles andthe like having two pressure equalizing conduits, means for downwardly discharging the return pressure equalizing conduit before the next bottle is placed in position, and a filling cock,

said cock having a full bore channel therein which completes said'returnconduit in one position of said cock and a small bore channel which completes the said return conduit in another position of said cock.

' JOSEF KRI EGLMEYER. 

